Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/04—Brake-action initiating means for personal initiation foot actuated
  • B60T7/06—Disposition of pedal
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
  • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
  • G05G1/30—Controlling members actuated by foot
  • G05G1/50—Manufacturing of pedals; Pedals characterised by the material used

Definitions

• the invention relates to an actuating pedal for a motor vehicle, in particular a clutch pedal or a foot pedal for a parking brake, according to the
• Actuating pedal are exercised - especially if this is designed as a brake pedal.
• a high torsional stiffness is therefore desirable and necessary in an operating pedal to provide a direct and secure feeling for the driver at all times when pedaling the operating pedal, and to avoid lateral slippage from the pedal.
• the actuating pedals currently known and used in the art are usually made of steel. In most cases, such operating pedals are made of sheet steel, wherein the manufacturing process typically comprises several forming processes. In addition to the pedal body as a base sheet metal part after forming other components - for example, for storage, for attaching return springs or for operating limit switches - welded.
• thermoforming tools required for the shaping of the metallic pedal body are comparatively complicated and thus expensive to produce.
• actuating pedals used in the prior art essentially made of steel, also have a comparatively high mass, as a result of which the unladen weight of a motor vehicle is correspondingly increased.
• actuating pedals are known in the art, which are made entirely of plastic. Although these are relatively inexpensive to produce and have a lower weight than pedals containing metal parts. However, achieving the requisite strength and rigidity in the design of plastic actuation pedals is problematic. In addition, such pedals show a relatively pronounced temperature dependence of their mechanical properties.
• an actuating pedal for a motor vehicle in the form of a clutch pedal or foot pedal for a parking brake
• the actuating pedal comprises a pedal body with a profile carrier made of a continuous fiber reinforced plastic, a bearing device for pivotally mounting the actuating pedal and an actuating strut surface, wherein the bearing device and the operating surface are made of plastic
• the profile support is formed at least in sections as an open U-shaped, as an open L-shaped or as a closed tubular profile made of organic sheet, preferably in the form of a prefabricated Organo sheet feeder to which the storage device, the Operating surface and other plastic elements are molded.
• Actuator pedals which is specially designed as a clutch pedal or as a foot pedal for a parking brake, made entirely of plastic with a profile carrier made of organic sheet allows cost-effective production at low material costs.
• Organo sheets are quasi endless fiber reinforced
• Thermoplastic plastics for example with polyamide 6 as a matrix, wherein the fibers can be oriented only in one direction or arranged at right angles to each other as a fabric.
• the fibers may be glass fibers, aramid fibers or carbon fibers.
• Organo sheets can be reshaped after prior heating similar to metal sheets and are suitable because of their high strength and rigidity at low density advantageous as a lightweight material.
• organo sheets meet all the requirements for mechanical strength in pedal applications, for example with regard to the torsional and bending stiffness.
• actuating pedal according to the invention can in comparison to the production of a Operating pedal made of metal a whole number of manufacturing steps are eliminated, such as the no longer necessary final surface treatment
• the actuating pedal thus formed also in comparison to conventional solid plastic pedals a low weight and at the same time the necessary strength and rigidity, which achieved on the one hand by the use of continuous fiber reinforced plastic (organic sheet) for the profile support and on the other hand by the special shape of the profile support becomes.
• the present invention enables a free and optimized shaping of the operating pedal.
• the profile carrier with the bearing device, actuating surface and other plastic elements molded onto it is produced by means of a one-shot method.
• This offers the advantage that the otherwise separate forming step of the organo-sheet profile carrier is laid in the injection mold and thus reshaping and injection molding are carried out in a single process step.
• the closed tubular profile is constructed in two parts from a first tube half and a second tube half with respective projecting longitudinal edges, wherein the longitudinal edges of the first and second tube halves are encapsulated in plastic, to fix the first and second tube half together.
• the encapsulation of the longitudinal edges offers next to the fixation of the two tube halves to each other the profile also additional stability.
• the profile carrier is an open U- or L-shaped profile, which is open at the bottom or laterally.
• the profile carrier preferably has a first and a second open U-shaped profile, which each have a bottom part (middle leg) with two leg parts projecting therefrom (free legs). have, wherein the bottom parts of the first and second U-shaped profile are arranged adjacent to each other, so that each projecting therefrom leg portions of the first and second U-shaped profile in opposite
• Variant achieves a particularly high strength and rigidity.
• Reinforcing elements in particular crosswise arranged reinforcing ribs having.
• the reinforcing elements can also be arranged honeycomb. As a result, the strength and rigidity of the operating pedal is further improved.
• the reinforcing elements are preferably injected into the (open) profile of the profile carrier.
• the plastic elements molded onto the profile carrier, the actuating plate and the bearing device consist of a thermoplastic, in particular of PA6 GF40, polypropylene or polyamide. Since the matrix of the endless fiber-reinforced plastic in the form of the organic sheet, from which the profile carrier is made, also comprises a thermoplastic, then a particularly intimate connection can be made between the profile carrier and the molded plastic element. In this case, it is particularly advantageous if the matrix of the organic sheet from which the profile carrier is made and the plastic element molded onto it have the same thermoplastic.
• the profile carrier forms the actual structure of the pedal body, which gives it a good dimensional stability, wherein the profile support can form at least in sections an outer contour of the pedal. It is also advantageous if the plastic elements comprise functional elements and / or receptacles for functional elements and / or connections for functional elements.
• the bearing device for connecting the control pedal to the body-mounted pedal block and / or further bearing points, connecting parts, stops or force application points for switches, springs or the like may be integrally provided on the pedal body of the actuating pedal, preferably by injection molding.
• essentially the entire actuating pedal, including all of the said functional areas, can be manufactured in one piece, whereby both the production outlay and the component unit costs, as well as the component mass, can be further significantly reduced.
• said plastic elements comprise a receptacle for a Studentstotddlingfeder, a receptacle for a return spring, a receptacle for a clutch master cylinder (KGZ) and / or a receptacle for a push rod and / or a receptacle for unlocking, said list not
• the plastic elements comprise a switching cam for identifying a switching position, a stop, in particular a pedal stop, an element for actuating a rotational angle sensor and / or a deflector element.
• Actuator pedal is integrated in order to convey the known operating feeling to the driver, in particular also with electronically executed coupling functionality. Furthermore, it is advantageous if a rotation angle sensor is arranged on the actuating pedal. It is particularly preferred if a rotary potentiometer is used for measuring the angular position, since this is a cost-effective solution for detecting the rotation, which can also be realized with standard series components.
• a switch for signaling in the operating pedal is integrated.
• a handle may be provided on the actuating pedal, which is molded in particular on the profile carrier.
• the profile carrier is an organic sheet inserter, i. a prefabricated structural component made of organic sheet.
• an organo-sheet inserter for an operating pedal according to the above embodiments, i. provided for the production of such a pedal, which brings the advantages already mentioned above with it.
• Figures 1 A - 1 D isometric views of an actuating pedal according to a
• Figures 2A-2B are views of an actuating pedal according to another
• Figures 3A - 3B are views of an actuating pedal according to yet another
• FIGS. 4A-4C show respective views of a section of a profile carrier of an actuating pedal according to an embodiment
• FIGS. 5A-5C show respective views of a section of a profile carrier of a
• FIGS. 6A-6E are respective views of a pedal body of an operating pedal according to another embodiment
• FIGS. 7A-7C are respective further views of that shown in FIGS. 6A to 6D
• Figure 8 is a front view of an operating pedal according to yet another embodiment
• FIGS. 9A-9B are respective schematic views of a pedal lever bearing according to an embodiment.
• Figures 10A-10B are respective schematic views of a pedal lever bearing according to yet another embodiment.
• FIGS. 1 A to 1 D show respective isometric views of an actuating pedal 1 according to an embodiment of the invention, FIG. 1A being a view of the actuating pedal 1 obliquely from the front, FIG. 1B being a view of the actuating pedal 1 from the side, FIG Operating pedal 1 obliquely from behind and Figure 1 D is a view of the control pedal 1 from the rear.
• the actuating pedal 1 is designed as a clutch pedal, which comprises a pedal body 2 with a profiled carrier 3 made of an endless fiber-reinforced plastic or organo-sheet, a bearing device 4 for the pivotable mounting of the operating pedal 1 on a bearing block and an actuating strut surface 5.
• the bearing device 4 and the operating surface 5 are made of plastic and made of the profile carrier 3 Organic sheet injected in the one-shot process, which means that also takes place a transformation of the organic sheet itself within the injection molding tool. Furthermore, cross-shaped reinforcing elements 6, which are designed as reinforcing ribs, are injection-molded onto the profile carrier 3, which here is designed as a laterally open substantially U-shaped profile, in this process.
• the profile carrier 3 is provided on its underside 7 with a connection 8 for a reversing lever or toggle lever 9, which is provided with a spring 10 in the Actuator pedal 1 integrated force simulator 1 1 interacts.
• the toggle lever 9, which is formed from two combined articulated levers on a joint 24, one of which is rotatably fixed to the profile carrier 3 and the other axially displaceable on the bearing block 23, is supported on the bearing block 23 via the spring 10.
• a cam 25 (see Figure 1 B) is formed, which is guided in a guide track of a guide element.
• a special lever kinematics is formed, which allows a largely free design of the force-displacement curve of the control pedal 1 according to the customer or application specifications.
• a clutch-by-wire device 12 is integrated with an actuation and a sensor by injecting the corresponding connection into the actuating pedal 1.
• FIGS. 2A and 2B show views of an actuating pedal 1 according to a further embodiment of the invention, wherein FIG. 2A shows an isometric view of an actuating pedal 1 and FIG. 2B shows a detailed view of a section of FIG. 2A.
• the actuating pedal 1 shown here is designed as a foot pedal for a parking brake and also has a pedal body 2 with a made of an endless fiber-reinforced plastic or made of organic sheet
• Profile carrier 3 a bearing device 4 for pivotally mounting the actuating pedal 1 and a control panel 5 on. As both in the embodiment shown in Figures 1 A to 1 D, the bearing device 4 and the
• the profile carrier 3 which is also designed here as an essentially U-shaped profile open to one side, provides or reinforces ribs 6 or reinforcing ribs arranged in the shape of a honeycomb in the interior surrounded by the U-profile injected. Besides, this is in this
• KGZ clutch master cylinder
• the connection 13 consists of three parallel semicircular plates 14, which in each case in their middle and in alignment with each other have a round through-hole 22 through which bolts not shown here can be passed.
• FIGS. 3A and 3B show views of an actuating pedal 1 according to yet another embodiment, which differs from the embodiment illustrated in FIGS. 2A and 2B in that the connection 13 for the KGZ takes place via a ball pin 15 molded onto the profile carrier 3.
• FIGS. 4A to 4C are respective views of a portion of FIG.
• Profile support 3 of an actuating pedal 1 which is composed of two open U-shaped profiles, namely the first U-shaped profile 1 6 and the second U-shaped profile 1 6 ', each having a bottom part 17, 17' with each two thereof projecting leg portions 18, 18 ', 18 ", 18'", wherein the bottom parts 17, 17 'of the first and second U-shaped profiles 1 6, 1 6' are arranged adjacent to each other, so that each of them projecting leg portions 18, 18 ', 18 ", 18'” of the first and second U-shaped profiles 16, 1 6 'have in opposite directions.
• This can be seen particularly well in the sectional view of the section of the profile carrier 3 shown in FIG. 4C.
• the U-shaped profiles 16, 1 6 ' are made of organic sheet and form a profile support 3 for an actuating pedal 1, which is not fully shown here. Also, in each of the U-shaped profiles 1 6, 1 6 'defined inside reinforcing elements 6 are injected in the form of cross-shaped reinforcing ribs, for example in the course of a one-shot process, as already described above and in connection with the figures 1 A to 1 D has been described. This can be seen particularly well in the side view of the section of the profile carrier 3 shown in FIG. 4B.
• Figures 5A to 5C show respective views of a portion of a
• Profile support 3 of an actuating pedal 1 according to another embodiment.
• the profile carrier 3 is constructed here from a closed tubular profile 19 with a substantially round cross section (see FIG. 4C).
• the tubular profile 19 is in the embodiment shown here in two parts of a first tube half 20 and a second tube half 20 'with respective projecting longitudinal edges 21, 21' is constructed, wherein the longitudinal edges 21, 21 'of the first and second tube halves 20, 20' with Plastic are injection-molded, which is particularly well recognizable in the side view of Figure 5B, to fix the first and second tube half 20, 20 'to each other and to give the profile support 3 thus produced an even better dimensional stability.
• the profile carrier 3 thus formed can also be encapsulated with a plastic layer on its remaining outer circumference.
• the profile carrier 3 thus formed can also be provided on its inner circumference with a sprayed-on plastic layer.
• the organic sheet itself at least partially forms the outer skin or the outer contour of the profile carrier 3 or
• Actuator Pedals 1 The profile variants for the profile carrier 3 described above in connection with FIGS. 4A to 4C and 5A to 5C are extremely dimensionally stable and thus protected against kinking or buckling.
• the actuating pedal 1 according to the invention provides a vehicle component with extremely high stiffness values with respect to torsion and bending with at the same time very low component mass.
• Actuator pedal is created, which is inexpensive to produce and has a minimum number of components and a very low mass, at the same time high demands on the rigidity and thus also on the reliability and operating feeling, for example during the coupling process, are met.
• the actuating pedal according to the invention can also comprise in one piece various functional elements, force application points and connecting components,
• FIGS. 6A to 6E show respective views of a pedal body 2 of an operating pedal 1 according to another embodiment.
• 6A shows an isometric view of an actuating pedal 1 in exploded individual parts, ie the profile carrier 3 made of organic sheet separated from the one-piece filling body 26 made of injection-molded plastic
• Figure 6B the operating pedal 1 in the assembled state
• Figure 6C is a view of the operating pedal 1 obliquely from below
• Figure 6D is a view of the actuating pedal 1 from below
• Figure 6E is a view of the actuating pedal 1 from above.
• the profile carrier 3 is open at the bottom; the filler 26 includes all structural components of the control pedal 1 and is manufactured by injection molding in one piece construction.
• the filler body 26 comprises an actuating strut surface 5 with a deflector 27 (deflector integration, currently a function of the pedal rubber, which is not shown here), the honeycomb reinforcing elements 6, a receptacle 28 for an over-center spring, a receptacle 29 for a return spring, the bearing device 4 and switching cam 30 for identifying the switching position and a receptacle 31 for a KGZ or a push rod, which as a reference at reference 31 'a correspondence in the profile carrier. 3 place. Furthermore, a structure 32 for actuating a rotational angle sensor is integrally formed on the filler body 26. As can also be seen in FIGS. 6C and 6D, a pedal stop 34 is finally provided on the underside 33 of the filling body 26.
• a deflector 27 deflector integration, currently a function of the pedal rubber, which is not shown here
• the honeycomb reinforcing elements 6 a receptacle 28 for an over-center spring
• Figures 7A to 7C show respective further views of the pedal body 2 shown in Figures 6A to 6E
• Figure 7A is a side view of the pedal body 2
• Figure 7B is a sectional view through the pedal body 2 along the line BB in Figure 7A in the region of the receptacle 31 of the KGZ
• Figure 7C is a sectional view through the pedal body 2 taken along the line AA in Figure 7A.
• the profile carrier 3 here has a U-shaped profile which is open at the bottom. The structure especially of the reinforcing elements 6 is also clearly visible in Figure 7C.
• FIG. 8 shows a front view of an actuating pedal 1 according to yet another embodiment, which in contrast to the already described embodiments has a pedal body 2 in a cranked configuration. This may be advantageous in view of certain space requirements.
• Figures 9A and 9B show respective schematic views of a pedal lever bearing 35 according to an embodiment, wherein Figure 9A shows a side view of the pedal lever bearing 35 and Figure 9B is a sectional view taken along the line A-A in Figure 9A.
• the pedal body 2 of the actuating pedal 1 is indicated only schematically.
• the pedal body 2 is about its bearing means 4 by means of a bearing pin 36 which is received in the bearing device 4, about the pivot axis 37 pivotally mounted in a bearing block 23, which is also indicated only schematically stored.
• Figures 10A and 10B show respective schematic views of one
• Figure 10A is a side view of the pedal lever bearing 35 and Figure 10B a
• Sectional view along the line AA in Figure 10A shows. Unlike in the Figures 9A and 9B illustrated embodiment, the embodiment shown here is fork-shaped.
• the bearing device 4 is formed as a projecting from the pedal body 2 on both sides axis or stub axle 38, which is mounted in a plain bearing bush 39 or are.

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• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• Mechanical Control Devices (AREA)
• Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

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Citations (6)

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• 2012
  • 2012-08-02 DE DE102012213665.7A patent/DE102012213665A1/de not_active Withdrawn
• 2013
  • 2013-07-03 EP EP13736830.4A patent/EP2879924B1/fr active Active
  • 2013-07-03 WO PCT/EP2013/063979 patent/WO2014019793A1/fr not_active Ceased

Patent Citations (6)

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